During floods they pour over their banks upon the surrounding valleys, by a thousand channels which interlace and establish communication between the main streams. After numerous bifurcations they find their way into the sea by three principal mouths.
As the rivers creep farther down the delta, they become more and more sluggish, and their bifurcations and interlacings more complicated.
In Sphenophyllum majus, where the cones are less sharply defined, the forked bract bears a group of four sporangia at the bifurcations, but their mode of insertion has not yet been made out.
How would you define bifurcations? Add your definition here.